CN102950508A

CN102950508A - Dividing plate of turbine disc mortise broaching machine tool

Info

Publication number: CN102950508A
Application number: CN2012103416289A
Authority: CN
Inventors: 唐进元; 曹茂鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-17
Filing date: 2012-09-17
Publication date: 2013-03-06

Abstract

The invention discloses a dividing plate of a turbine disc mortise broaching machine tool. An upper cover plate 7, a locating pin 8 and a locating block 9 are installed on an upper rotary disc 1, a wedged block 12, a locking rod 13, a piston 14 and a Belleville spring 15 are installed in a lower base 3, the upper rotary disc 1 and the lower base 3 are directly connected with a connector 6 through a torque motor 4, and a rotary encoder is installed on a roller bearing 2. A motor direct drive mode is adopted, the integral structure of the dividing plate is effectively simplified, a built-in clamping device can enable the dividing plate to be simple in appearance and to resist large overturning moment, and the rotary precision of the dividing plate can be ensured through the feedback regulation of the rotary encoder. The dividing plate can satisfy the dividing requirements of the turbine disc mortise broaching machine tool.

Description

A kind of turbine disk tongue-and-groove broaching lathe index dial

Technical field

The invention belongs to this field of indexing means in the turbine disk tongue-and-groove broaching lathe.

Background technology

The turbine disk is the important composition part in the airspace engine, it with corresponding axle, blade interconnects and form rotor portion in the engine.The turbine disk need to long-term work under the adverse circumstances of high speed, high temperature, high pressure.Therefore, the turbine disk in the selection of material general adopt have high strength, can resistant to elevated temperatures material.The structural design of the turbine disk is also complicated, and particularly the fir shape straight-tooth tongue-and-groove on it has the structure of more complicated and higher accuracy of manufacture requirement.Tongue-and-groove is the part that the turbine disk of aero-engine combines with turbo blade, works under high speed, high temperature, condition of high voltage, bears the comprehensive function of great centrifugal force, shearing force, bending stress etc.Can tongue-and-groove processing and manufacturing precision not only affects turbo blade keep movement position and the direction stipulated, also directly affects the overall performance of aero-engine.Because the turbine disk is generally all selected high strength, exotic material, materials is relatively more difficult processing all.And the precision prescribed of its middle tenon groove is the highest, and difficulty of processing is again maximum.Therefore, tongue-and-groove processing is own through becoming the key technology of turbine disk processing, becomes the key point of restriction aero-engine machine-building development.

So turbine disk tongue-and-groove generally adopts broaching processing on processing technology.Domestic and international existing turbine disk tongue-and-groove broaching lathe has two classes: a class is common horizontal hydraulic hole broaching lathe, another kind of is advanced high speed broaching lathe, and the latter has the advantages that Dynamic and static stiffness is good, kinematic accuracy is high, broaching speed is fast and stroke distances is large.At present, all adopt high-speed numeric control lateral recumbent posture broaching center in aviation big country turbine disk tongue-and-groove processing such as the U.S., Britain, France, Germany.For turbine disk machining tool, the level that abroad has been in a leading position, can high-efficiency high-precision the tongue-and-groove of the processing turbine disk.Cut lathe such as the large-size horizontal layback that Britain Marbaix Lapointe company produces, have and to realize the motion of 5 axles, positioning accuracy is the omnipotent clamping workpiece base of 5 μ m, and the broaching equipment of advanced turbine disk blade tongue-and-groove is provided for Aero-Space and generating equipment industry.

At present, the higher producer of domestic processing tongue-and-groove class part level mainly concentrates on large-scale aero-engine manufacturer of several families, starts (group) Co., Ltd, Xi'an aviation to start manufacturing company, south, Zhuzhou tool and mould company etc. such as Chengdu.Wherein, aero-engine manufacturing company in Xi'an is the famous producer of domestic production tongue-and-groove class part.But the equipment of the processing tongue-and-groove of this factory but is the horizontal broaching lathe of high accuracy, high-speed numeric control of equipment Imported From German EMH Company.Abroad compare, domestic broaching lathe all is 2 axle broaching lathes, and is quite large with the external product gap aspect cutting force and speed.Because the important function of the turbine disk is blocked very tight to its high accuracy manufacturing equipment and manufacturing process key technology abroad.Domestic because starting is late, the time is short, it is tight to block, China can't produce turbine disk tongue-and-groove machining tool voluntarily so far.Owing to be subjected to the restriction of the restriction of part working ability and the own precision that produces lathes, lack again system and deep research for the tongue-and-groove process tool, China's gap with European and American countries aspect turbine disk tongue-and-groove process unit is quite large, and this has seriously restricted the manufacturing development of China's aero-engine.Development for high accuracy, high efficiency turbine disk tongue-and-groove numerical control machine for processing not only can realize the production domesticization of tongue-and-groove machining tool, also can promote simultaneously national manufacturing industry level, for the development of China's aircraft industry provides safeguard.

During " 12 ", China's economy will develop by held stationary faster, and domestic market demand will steadily be risen.Domestic air mail Aerospace manufacturing field is faced with industrial upgrading, and the machine tool processing industry is constantly proposed Secretary, and this is also indicating will the larger market demand capacity.But the domestic at present fully autonomous production of top grade broaching process unit that aero-engine turbine disk tongue-and-groove broaching machining needs, rely on fully to external import, and abroad to broaching lathe, particularly the manufacturing technology of turbine disk tongue-and-groove broaching lathe is blocked very seriously.Therefore, the broaching process unit of research and development aero-engine turbine disk tongue-and-groove broaching machining need has good economic benefit, social benefit.

In addition, along with the fast development of modern machine industry, new higher requirement has been proposed the index dial as one of lathe important accessory.Require its structure more and more simpler, running precision requires more and more higher, and outer load is increasing, and for adapting to the size of processing work, the physical dimension size more and more is tending towards two-stage.Lathe is more and more special-purpose now, mainly for processing a certain or certain class part, for being used for clamping processing work and the index dial that carries out calibration, need to adapt to the clamping of workpiece, reach again kinematic accuracy, must adapt to various lathes, so the universality of circular dividing table is more and more difficult now.And reach high-precision dividing movement, need frame for movement and control feedback to mutually combine.This relates to structural design, part processing and Control System Design.Index dial realizes that high accuracy, anti-high tilting moment are difficult, is difficult to adapt to designed turbine disk tongue-and-groove broaching lathe.

The index dial that is applicable to turbine disk tongue-and-groove broaching lathe of this patent design can be realized high-precision dividing movement, and can resist higher tilting moment.Overall structure is simple and practical, is convenient to manufacture.

Summary of the invention

The technical problem that this patent solves is: the problem that faces for designing requirement and the existing index dial of turbine disk tongue-and-groove broaching lathe, invented a kind of index dial that is applicable to turbine disk tongue-and-groove broaching lathe, it can realize high-precision dividing movement, and can resist higher tilting moment.

The index dial of this patent invention, it is characterized in that: upper cover plate 7, alignment pin 8, locating piece 9 are installed on the top rotary table 1, voussoir 12, check lock lever 13, piston 14, disk spring 15 are installed in the lower bottom base 3, top rotary table 1 is connected with lower bottom base to be connected with connector directly by torque motor 4 and is connected, and on the roller bearing 2 rotary encoder is installed.

Alignment pin 8 on the top rotary table 1 and locating piece 9 are used for the location of workpiece, and its upper screwed hole is used for workpiece and installs.

Voussoir 12 in the lower bottom base 3, piston 14, disk spring 15, check lock lever 16 consist of the clamping that clamping device is used for top rotary table.

Torque motor 4 directly drives the rotation of top rotary table.

Rotary encoder on the roller bearing 2 carries out feedback regulation to the running accuracy of index dial.

The index dial of this patent design, adopt the form of motor direct-drive, effectively simplified the overall structure of index dial, built-in clamping device has guaranteed that the index dial profile is simple, and having guaranteed that index dial can resist larger tilting moment, the feedback regulation of rotary encoder has guaranteed the running accuracy of index dial.This index dial can satisfy the requirement of calibration in the turbine disk tongue-and-groove broaching lathe.

Description of drawings

Fig. 1 is the index dial half sectional view.

Fig. 2 is index dial clamped position cutaway view.

Fig. 3 is index dial clamped position partial view.

Claims

1. turbine disk tongue-and-groove broaching lathe index dial, it is characterized in that: upper cover plate 7, alignment pin 8, locating piece 9 are installed on the top rotary table 1, voussoir 12, check lock lever 13, piston 14, disk spring 15 are installed in the lower bottom base 3, top rotary table 1 is connected with lower bottom base to be connected with connector directly by torque motor 4 and is connected, and on the roller bearing 2 rotary encoder is installed.

2. index dial according to claim 1 is characterized in that: the alignment pin 8 on the top rotary table 1 and locating piece 9 are used for the location of workpiece, and its upper screwed hole is used for workpiece and installs.

3. index dial according to claim 1 is characterized in that: the voussoir 12 in the lower bottom base 3, piston 14, disk spring 15, check lock levers 16 are used for the clamping of top rotary table.

4. index dial according to claim 1 is characterized in that: the torque motor 4 direct rotations that drive top rotary table.

5. index dial according to claim 1, it is characterized in that: the rotary encoder on the roller bearing 2 is regulated its running accuracy.